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16

com.objectdb.o.NLV cannot be cast to com.objectdb.o.CMV

internal exception           at com.arunta.base.db.RecordingMetaDataDAO.getSingleResult(RecordingMetaDataDAO.java:958)                     at com.arunta.app.services.RecordingService.getSingleResult ... )                                                          at com.objectdb.jpa.JpaQuery.getSingleResult(JpaQuery.java:723
16

Criteria Query results in a NoResultException instead of returning object

(criteria).getSingleResult(); which evaluates to the query: SELECT $1 FROM IdentityObject $1 ... .java:1444) at com.objectdb.jpa.JpaQuery.getSingleResult(JpaQuery.java:620) at org.jboss.seam ... ("identityObjectName", obj.getName()) .getSingleResult(); queryStr evaluates
14

Error using query with MAX() function

= (Date)tq.getSingleResult(); em.getTransaction().commit(); System.out.println("MaxDate ... .objectdb.jpa.JpaQuery.getSingleResult(JpaQuery.java:607) at com.ibm.check.cmvc2git.Test.doit(Test ... .JpaQuery.getSingleResult(JpaQuery.java:607) at com.ibm.check.cmvc2git.Test.doit(Test.java:73) at com
14

Mismatch client-server protocol prefix

= (TrackerUser) q.getSingleResult();         em.detach(result);         return result;     } This code ... );         Object result = null;         try {             result = q.getSingleResult ... at the getSingleResult line: java.lang.ClassCastException: at.co.pjm.tracker.persistence
14

Catching exceptions from online backup

solution: Thread backupThread = backupQuery.getSingleResult(); backupThread ... is that You could either make this field accessible via some API or the TypedQuery.getSingleResult ... ); backupQuery.setParameter("start", false);     Thread backupThread = backupQuery.getSingleResult
14

EntityManagerFactory Fails To Swtich Over To Slave When Master Is Unavailable

COUNT(p) FROM Point p");   System.out.println("Total Points: " + q1.getSingleResult());   // Find ... ");   System.out.println("Average X: " + q2.getSingleResult()); } } package tutorial; import java.io ... ("Total Points: " + q1.getSingleResult());   // Find the average X value:   Query q2 = em
14

JPA - ExceptionInInitializerError when creating EntityManager

", "SMTP").getSingleResult(); port = emailSettings.setParameter("name", "Port").getSingleResult(); from = emailSettings.setParameter("name", "EMAILFROM").getSingleResult ... (Name))='SHIFTATTENDAFTERSLOT'") .setMaxResults(1).getSingleResult(); if (minutes != null && minutes
12

Online backup problem

.class);    Thread backupThread = backupQuery.getSingleResult();    backupThread.join ... .createEntityManager();   Query query = em.createQuery("objectdb backup");   query.getSingleResult ... .createQuery("objectdb backup");     query.setParameter("dummy", "dummy");     query.getSingleResult
2

"is not null" queries not working with index

.createQuery("SELECT COUNT(p) FROM Foo p").getSingleResult());         System.out.println("null    : " + em.createQuery("SELECT COUNT(p) FROM Foo p WHERE p.bar IS NULL").getSingleResult ... ").getSingleResult());         em.close();         emf.close();     }          @Entity     static
2

combined index not used

thread = em.createQuery( "objectdb statistics", Thread.class).getSingleResult ... .createQuery("objectdb statistics", Thread.class).getSingleResult(); thread.join(); on startup ... .class).getSingleResult(); thread.join(); em.close(); emf.close

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ObjectDB is very easy to use. Follow the Getting Started Tutorial and the Quick Tour manual chapter and in minutes you may be able to write and run first Java programs against ObjectDB.

Prior knowledge or experience in database programming (SQL, JDBC, ORM, JPA, etc.) is not required, but some background in using the Java language is essential.

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